Resultado da pesquisa (4)
Termo utilizado na pesquisa Ferreira Neto J.S.
#1 - Cattle trade between and within biomes in the state of Mato Grosso
Abstract in English:
The analysis of animal movement patterns may help identify farm premises with a potentially high risk of infectious disease introduction. Farm herd sizes and bovine movement data from 2007 in the state of Mato Grosso, Brazil, were analyzed. There are three different biomes in Mato Grosso: the Amazon, Cerrado, and Pantanal. The analysis of the animal trade between and within biomes would enable characterization of the connections between the biomes and the intensity of the internal trade within each biome. We conducted the following analyses: 1) the concentration of cattle on farm premises in the state and in each biome, 2) the number and relative frequency of cattle moved between biomes, and 3) the most frequent purposes for cattle movements. Twenty percent (20%) of the farm premises had 81.15% of the herd population. Those premises may be important not only for the spread of infectious diseases, but also for the implementation of surveillance and control strategies. Most of the cattle movement was intrastate (97.1%), and internal movements within each biome were predominant (88.6%). A high percentage of movement from the Pantanal was to the Cerrado (48.6%), the biome that received the most cattle for slaughter, fattening and reproduction (62.4%, 56.8%, and 49.1% of all movements for slaughter, fattening, and reproduction, respectively). The primary purposes for cattle trade were fattening (43.5%), slaughter (31.5%), and reproduction (22.7%). Presumably, movements for slaughter has a low risk of disease spread. In contrast, movements for fattening and reproduction purposes (66.2% of all movements) may contribute to an increased risk of the spread of infectious diseases.
Abstract in Portuguese:
A análise dos padrões de trânsito animal pode ajudar a identificar estabelecimentos sob um risco potencialmente maior de introdução de doença infecciosa. Foram analisadas a rede de trânsito de bovinos no estado do Mato Grosso, Brasil, e uma base de dados com tamanho de rebanho, ambas de 2007. Há três biomas diferentes em Mato Grosso: Amazônia, Cerrado e Pantanal. A análise do trânsito animal entre e dentro dos biomas nos permitiu caracterizar quão conectados são os biomas e quão intenso é o trânsito interno dentro de cada bioma. Conduzimos as seguintes análises: 1) se o rebanho bovino está concentrado em alguns estabelecimentos no estado todo e em cada bioma; 2) sobre o número absoluto e a frequência relativa de bovinos movimentados entre os biomas; e 3) quais são os propósitos mais frequentes para o trânsito animal. Encontramos que 20% dos estabelecimentos possuíam 81,15% do rebanho total do estado. Estes estabelecimentos podem ser importantes para o espalhamento de doenças infecciosas, mas também para a implementação de estratégias de vigilância e controle. A maior parte do trânsito foi dentro do estado (97,1%), e o trânsito interno dentro de cada bioma foi predominante (88,6%). Um percentual alto de movimentos do Pantanal (48,6%) foi para o Cerrado, o bioma que recebeu mais bovinos para abate, engorda e reprodução (62,4%, 56,8% e 49,1% de todos os movimentos para abate, engorda e reprodução, respectivemente). Os principais propósitos para o comércio de bovinos foram engorda (43,5%), abate (31,5%) e reprodução (22,7%). Movimentos para abate presumivelmente oferecem um baixo risco para espalhamento de doença. Em contraste, movimentos para engorda e reprodução (66,2% de todos os movimentos) podem contribuir para o aumento do risco de espalhamento de doenças infecciosas.
#2 - Mycobacteriae diagnosed in domestic cats in the backland of Paraiba, Brazil
Abstract in English:
This report describes two cases of domestic cats infected with Mycobacterium sp. in the backland of Paraiba, Northeast Brazil. The animals manifested nonspecific clinical signs, characterized by progressive weight loss, dyspnea, cough and generalized lymphadenomegaly in one cases, and clinical evolution of one and seven months respectively. Macroscopically the lesions were restricted to superficial and/or deep lymph nodes and pulmonary parenchyma, characterized by multifocal or multifocal to coalescent, yellowish and irregular nodules that presented multifocal areas with yellowish, friable and caseous as well as multifocal to coalescent, white and firm areas. Histologically, it was observed lymphadenitis and granulomatous pneumonia in both cases, varying in intensity of inflammatory response and degree of mineralization. The granulomas were constituted by macrophages and epithelioid cells, some with marked necrosis and central mineralization, surrounded by a large amount of connective tissue. In the first case there were also discrete and random granulomatous hepatitis. In both cases alcohol-acid-resistant bacilli were visualized inside the cytoplasm of macrophages in Ziehl-Neelsen staining; there was immunostaining for Mycobacterium sp. in the cytoplasm of macrophages. Through PCR was identified only the genus Mycobacterium in Case 1, and Mycobacterium bovis in Case 2. The diagnosis of Mycobacterium sp. In the cats was performed based on anatomopathological findings and immunohistochemistry. The PCR was performed the etiological diagnosis of mycobacteriosis in Case 1 and tuberculosis by M. bovis in Case 2. The diagnosis of diseases caused by mycobacteria in cats, especially those in which M. bovis was involved, is extremely important for public health highlighting the zoonotic potential of this species, since many infected animals may be asymptomatic or show nonspecific clinical signs.
Abstract in Portuguese:
Descrevem-se dois casos de infecção por Mycobacterium sp. em gatos domésticos no sertão da Paraíba, Nordeste do Brasil. Os animais apresentavam emagrecimento progressivo, dispneia, tosse e linfadenomegalia generalizada em um dos casos, com evolução clínica de um e sete meses, respectivamente. Macroscopicamente as lesões estavam restritas aos linfonodos superficiais e/ou profundos e parênquima pulmonar, caracterizadas por nódulos multifocais ou multifocais a coalescentes, amarelados, irregulares que ao corte apresentavam áreas multifocais a coalescentes amareladas, friáveis e caseosa, além de áreas multifocais brancacentas e firmes. Histologicamente, verificou-se linfadenite e pneumonia granulomatosa caracterizada por áreas centrais de necrose e mineralização central circundadas por macrófagos, células epiteliais e tecido conjuntivo fibroso. No primeiro caso havia ainda hepatite granulomatosa discreta e aleatória. Em ambos os casos, foram visualizados bacilos álcool-ácido resistentes livres e no citoplasma de macrófagos na coloração de Ziehl‑Neelsen. Houve imunomarcação para Mycobacterium sp. no citoplasma de macrófagos em ambos os casos. Na PCR, identificou-se apenas o gênero Mycobacterium no Caso 1 e Mycobacterium bovis no Caso 2. O diagnóstico de infecção por Mycobacterium sp. nos felinos foi realizado com base nos achados anatomopatológicos e imuno-histoquímica. Pela PCR foi realizado o diagnóstico etiológico de micobacteriose no Caso 1 e tuberculose por M. bovis no Caso 2. O diagnóstico das doenças causadas por micobactérias em felinos, principalmente aquelas em que M. bovis esteja envolvido, é de extrema importância para a saúde pública, destacando o potencial zoonótico desta espécie, pois muitos animais infectados podem ser assintomáticos ou apresentarem sinais clínicos inespecíficos.
#3 - Prevalência de anticorpos anti-Chlamydophila spp. em propriedades rurais com histórico de aborto bovino no estado do Paraná, p.215-219
Abstract in English:
ABSTRACT.- Silva-Zacarias F.G., Spohr K.A.H., Lima B.A.C., Dias J.A., Müller E.E., Ferreira Neto J.S., Turilli C. & Freitas J.C. 2009. [Prevalence of antibodies against Chlamydophila spp. in herds with bovine abortion of Paraná state, Brazil.] Prevalência de anticorpos anti-Chlamydophila spp. em propriedades rurais com histórico de aborto bovino no estado do Paraná. Pesquisa Veterinária Brasileira 29(3):215-219. Departamento de Medicina Veterinária Preventiva, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid 380, Cx. Postal 6001, Londrina, PR 86051-990, Brazil. E-mail: freitasj@uel.br
Chlamydophila abortus is a recognized cause of bovine epizootic abortion. Abortion, premature birth and weak lamb/calf, stillbirth and repeat breeding in irregular intervals are the most frequent disease manifestations. The complement fixation test is the recommended by the World Organization of Animal Health (OIE) for Chlamydophila spp. serologic diagnosis. The aim of this study was estimate the prevalence of antibodies against Chlamydophila spp. in cattle herds with abortion, selected inside the sampling design of National Program of Control and Erradication of Brucellosis in Paraná state. Serum samples of 3,102 cows (age ³ 24 months) from 373 herds were analyzed by complement fixation test. Totally, 44 (1.42%) animal were positive with titers ³ 32. The seroprevalence of Chlamydophila spp. in the herds was 8.82% (6.15%-12.17%). Four variables were associated with seroprevalence for Chlamydophila spp. in the final model of logistic regression: confined or semi-confined breeding (OR=3.339, P=0.004), farms with less than 35 cows (OR=3.339, P=0.017), abortion in the pasture (OR=2.372, P=0.037) and pasture rent (OR=3.398, P=0.006) were risk factors for Chlamydophila spp. This bacterium infected a small number of cattle from herds with abortion in Paraná state. Chlamydophila spp impact as abortion cause is reduced in this state.
Abstract in Portuguese:
ABSTRACT.- Silva-Zacarias F.G., Spohr K.A.H., Lima B.A.C., Dias J.A., Müller E.E., Ferreira Neto J.S., Turilli C. & Freitas J.C. 2009. [Prevalence of antibodies against Chlamydophila spp. in herds with bovine abortion of Paraná state, Brazil.] Prevalência de anticorpos anti-Chlamydophila spp. em propriedades rurais com histórico de aborto bovino no estado do Paraná. Pesquisa Veterinária Brasileira 29(3):215-219. Departamento de Medicina Veterinária Preventiva, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid 380, Cx. Postal 6001, Londrina, PR 86051-990, Brazil. E-mail: freitasj@uel.br
Chlamydophila abortus is a recognized cause of bovine epizootic abortion. Abortion, premature birth and weak lamb/calf, stillbirth and repeat breeding in irregular intervals are the most frequent disease manifestations. The complement fixation test is the recommended by the World Organization of Animal Health (OIE) for Chlamydophila spp. serologic diagnosis. The aim of this study was estimate the prevalence of antibodies against Chlamydophila spp. in cattle herds with abortion, selected inside the sampling design of National Program of Control and Erradication of Brucellosis in Paraná state. Serum samples of 3,102 cows (age ³ 24 months) from 373 herds were analyzed by complement fixation test. Totally, 44 (1.42%) animal were positive with titers ³ 32. The seroprevalence of Chlamydophila spp. in the herds was 8.82% (6.15%-12.17%). Four variables were associated with seroprevalence for Chlamydophila spp. in the final model of logistic regression: confined or semi-confined breeding (OR=3.339, P=0.004), farms with less than 35 cows (OR=3.339, P=0.017), abortion in the pasture (OR=2.372, P=0.037) and pasture rent (OR=3.398, P=0.006) were risk factors for Chlamydophila spp. This bacterium infected a small number of cattle from herds with abortion in Paraná state. Chlamydophila spp impact as abortion cause is reduced in this state.
#4 - Linfadenite granulomatosa em suínos: linfonodos afetados e diagnóstico patológico da infecção causada por agentes do Complexo Mycobacterium avium, p.13-17
Abstract in English:
ABSTRACT.- Morés N., Ventura L., Dutra V., Silva V.S., Barioni Jr W., Oliveira S.R, Kramer B. & Ferreira Neto J.S. 2007. [Granulomatous lymphadenitis in swine: lymph nodes affected and pathologic diagnosis of the infection caused by Mycobacterium avium Complex agents.] Linfadenite granulomatosa em suínos: linfonodos afetados e diagnóstico patológico da infecção causada por agentes do Complexo Mycobacterium avium. Pesquisa Veterinária Brasileira 27(1):13-17. Embrapa Suínos e Aves, Cx. Postal 21, Concórdia, SC 89700-000, Brazil. E-mail: mores@cnpsa.embrapa.br
A study to evaluate the distribution of granulomatous lesions in the lymph nodes of swine carcasses was accomplished. The main objective was to compare the methods of isolation of mycobacteria of the Mycobacterium avium Complex (MAC), Ziehl-Neelsen (ZN) staining, histopathological examination and immunohistochemistry (IHC) for the diagnosis of granulomatous lymphadenitis caused by MAC. A total of 431 samples of lymph nodes from 394 swine carcasses kept in 12 cold storage rooms of southern Brazil, which had the Service of Federal Inspection (SFI), were analyzed. Lymph nodes with granulomatous lesions were submitted to histological examination, ZN staining and IHC with monoclonal antibody produced with cellular extract of M. avium. The agreement between the exams was measured by the Kappa test at a 95% confidence level. The macrocospic examination done by SFI correctly identified 90.3% of granulomatous lesions, when compared with histological examination, and the majority of carcasses (92.5%) showed the lesions only in lymph nodes of the alimentary chain. Histological examination confirmed the presence of granulomatous lesions in 90.3% of the lymph nodes. The agreements between histological examination, ZN staining (Kappa: 0.342), IHC and the isolation of MAC (Kappa: 0.102) were low, however high between IHC and histology with typical presence of granulomas in the lymph nodes (Kappa: 0.973). IHC together with histological examination revealed to be efficient for identification of the granulomatous lymphadenitis caused by MAC.
Abstract in Portuguese:
ABSTRACT.- Morés N., Ventura L., Dutra V., Silva V.S., Barioni Jr W., Oliveira S.R, Kramer B. & Ferreira Neto J.S. 2007. [Granulomatous lymphadenitis in swine: lymph nodes affected and pathologic diagnosis of the infection caused by Mycobacterium avium Complex agents.] Linfadenite granulomatosa em suínos: linfonodos afetados e diagnóstico patológico da infecção causada por agentes do Complexo Mycobacterium avium. Pesquisa Veterinária Brasileira 27(1):13-17. Embrapa Suínos e Aves, Cx. Postal 21, Concórdia, SC 89700-000, Brazil. E-mail: mores@cnpsa.embrapa.br
A study to evaluate the distribution of granulomatous lesions in the lymph nodes of swine carcasses was accomplished. The main objective was to compare the methods of isolation of mycobacteria of the Mycobacterium avium Complex (MAC), Ziehl-Neelsen (ZN) staining, histopathological examination and immunohistochemistry (IHC) for the diagnosis of granulomatous lymphadenitis caused by MAC. A total of 431 samples of lymph nodes from 394 swine carcasses kept in 12 cold storage rooms of southern Brazil, which had the Service of Federal Inspection (SFI), were analyzed. Lymph nodes with granulomatous lesions were submitted to histological examination, ZN staining and IHC with monoclonal antibody produced with cellular extract of M. avium. The agreement between the exams was measured by the Kappa test at a 95% confidence level. The macrocospic examination done by SFI correctly identified 90.3% of granulomatous lesions, when compared with histological examination, and the majority of carcasses (92.5%) showed the lesions only in lymph nodes of the alimentary chain. Histological examination confirmed the presence of granulomatous lesions in 90.3% of the lymph nodes. The agreements between histological examination, ZN staining (Kappa: 0.342), IHC and the isolation of MAC (Kappa: 0.102) were low, however high between IHC and histology with typical presence of granulomas in the lymph nodes (Kappa: 0.973). IHC together with histological examination revealed to be efficient for identification of the granulomatous lymphadenitis caused by MAC.
